| 胶束增溶二阶导数分光光度法同时测定豆粉中Cu、Cd和Zn含量的研究 |
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| 引用本文： | 刘欣,王晓鹏. 胶束增溶二阶导数分光光度法同时测定豆粉中Cu、Cd和Zn含量的研究[J]. 泰山医学院学报, 2008, 29(4): 244-247 |
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| 作者姓名： | 刘欣 王晓鹏 |
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| 作者单位： | 泰山医学院,化学与化学工程学院,山东,泰安,271000 |
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| 摘 要： | 目的研究了胶束增溶二阶导数分光光度法同时测定豆粉中的Cu、Cd和Zn含量的实验条件等。方法在pH值为9.2的磷酸氢二钠缓冲溶液体系中,在加入乳化剂OP(聚乙二醇辛基苯基醚)产生胶束增溶作用及显色剂1-(2-吡啶偶氮)-2-萘酚(PAN)的络合作用后,通过二阶导数分光光度法同时测定豆粉中铜、镉和锌时对波长选择、OP用量及体系酸度、温度等的对比。结果方法的检出限为5.5×10-6g/L,仪器精密度测定RSD为0.37%,测定样品后的回收率在95%~102%之间。结论通过二阶导数分光光度法在胶束增溶作用下,铜、镉和锌可以由显色剂所产生的络合作用下被同时测定出来。该方法是可行的,灵敏度较高,结果令人满意。
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| 关 键 词： | 导数分光光度法 同时测定 胶束增溶 |
| 文章编号： | 1004-7115(2008)04-0244-04 |
| 修稿时间： | 2008-01-15 |
Study on simultaneous determination of copper, zinc and cadmium determination of microamount of copper in soya bean milk powder by second-derivative and spectrophoptometry |
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| LIU Xin,WANG Xiao-peng. Study on simultaneous determination of copper, zinc and cadmium determination of microamount of copper in soya bean milk powder by second-derivative and spectrophoptometry[J]. Journal of Taishan Medical College, 2008, 29(4): 244-247 |
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| Authors: | LIU Xin WANG Xiao-peng |
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| Affiliation: | LIU Xin; WANG Xiao-peng(School of Chemistry and Chemical Engineering; Taishan Medical College; Taian 271000; China); |
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| Abstract: | Objective:To research the micellar solubilization second derivative dimultaneous determination of soybean meal in the Cu,Cd and Zn concentrations in the experimental conditions.Methods: At the PH value of 9.2 in the Na2HPO4 buffer system,wity the emulsifier OP(OP) was added to produce micellar solubilization and the complexation of reagent 1-(2-pyridylazo)-2-naphthol(PAN),Simultaneous determinations of the wavelength selection,dosage and OP system acidity,temperature contrast were made in copper,cadmium and... |
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| Keywords: | derivative spectrophotometry simultaneous test micellar solubilization |
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